JavaScript Online Compiler
Write, Run & Share JavaScript code online using OneCompiler's JS online compiler for free. It's one of the robust, feature-rich online compilers for JavaScript language, running the latest Node version. Getting started with the OneCompiler's JavaScript editor is easy and fast.
About JavaScript
JavaScript (JS) is the most popular lightweight, interpreted compiled programming language, created by Brendan Eich in 1995. It is a high-level, often just-in-time compiled, multi-paradigm language used for building Web pages.
Key features
- Free
- Online
- Real-time output
- Easy & fast
- No setup or installation required
Variables
Use `let`, `const`, or `var` to declare variables.
let name = "World";
const PI = 3.14;
console.log("Hello, " + name);Loops
for (let i = 0; i < 5; i++) {
console.log(i);
}Functions
function add(a, b) {
return a + b;
}
console.log(add(2, 3));